Hmmm, Cyber Knight (both SFC and PCE versions) was published by Tonkin House, but from this person's profile this game was from Nintendo itself, so it's not very likely (unless of course the information on the page are incorrect).

Looking at the guy's profile on Moby Games, most of his games are Hudson games.

I think that's someone else with the same name. Judging by his profile, he worked for Tose, Now Production, and Locomotive (don't know about the last game on the list). I don't see him on the Cyber Knight games, and I don't think any of those companies were involved with them. The name "Syber Duel" not being in Japanese and "SNES" being used suggest to me this was something targeted at the West.